The east and west sides of the eastern temple have false doorways with Chenes style monster masks. Eyes and teeth of the frontal mask are visible above the false door, while remains of the profile masks bracket the doorway on each side. Stacked Chac masks decorate the corners of the temple.
Paul Gendrop writes: "The difficulty of establishing a clear distinction between the Rio BecChenes style and the neighboring Puuc style becomes apparant here, where serpent motifs and little masks of the rain god are found together in the small temple on the roof of complex A1."
Paul Gendrop, A Guide to Architecture in Ancient Mexico